Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Roger Skjetne"'
Publikováno v:
IEEE Access, Vol 11, Pp 58596-58609 (2023)
The main contribution of this paper is a numerical ship motion model of NTNU’s research vessel Gunnerus, capturing the surge, sway, roll, and yaw dynamics when sailing in uniform and steady currents. The model utilizes a crossflow drag formulation
Externí odkaz:
https://doaj.org/article/2c2074db9efa42fbaaa819d338341a13
Publikováno v:
IEEE Access, Vol 9, Pp 77938-77953 (2021)
In this paper, we consider the problem of accurate force control using actuated winches, intended for use in real-time hybrid hydrodynamic model testing. The paper is also relevant to other cable-driven parallel robot applications that use force cont
Externí odkaz:
https://doaj.org/article/2c90c015efd64d29ba939528697bd4f0
Publikováno v:
IEEE Access, Vol 8, Pp 193813-193826 (2020)
In this article, combinations of linear and nonlinear feedback terms are investigated for 3 degrees-of-freedom pose and velocity control of ships. Nonlinear control algorithms that are found in the literature often have linear feedback terms, which r
Externí odkaz:
https://doaj.org/article/647c925464af45f4a9fa6cfc8f99cfab
Publikováno v:
Results in Engineering, Vol 4, Iss , Pp - (2019)
Computer-aided scene analysis has drawn much attention, especially in autonomous navigation and advanced navigation assistance systems for surface vessels. In ice-infested waters, multilabel ice object classification and segmentation form the core of
Externí odkaz:
https://doaj.org/article/fc4cde881dfe46d39eeb424e3ae7ed91
Autor:
Petter Norgren, Roger Skjetne
Publikováno v:
IEEE Access, Vol 6, Pp 26318-26337 (2018)
Using autonomous underwater vehicles (AUVs) for mapping underwater topography of sea-ice and icebergs, or detecting keels of ice ridges, is foreseen as enabling technology in future arctic marine operations. Wind, current, and Coriolis forces affect
Externí odkaz:
https://doaj.org/article/4f6ba297550c46d4869eea9cf1e2e930
Publikováno v:
IEEE Access, Vol 5, Pp 14787-14796 (2017)
This paper deals with the problem of transient events in model-based observers for dynamic positioning of marine surface vessels. Traditionally, model-based observers experience a deterioration of performance during transients, and there is a give or
Externí odkaz:
https://doaj.org/article/5c74090932a2457eb322986198751e0f
Publikováno v:
Journal of Marine Science and Engineering, Vol 9, Iss 2, p 191 (2021)
In real-time hybrid model testing, complex ocean structures are emulated by fusing numerical modelling with traditional hydrodynamic model testing. This is done by partitioning the ocean structure under consideration into a numerical and a physical s
Externí odkaz:
https://doaj.org/article/70e17dc3f20c4819b1fbe230d2f9a4f6
Autor:
Oivind Kare Kjerstad, Roger Skjetne
Publikováno v:
IEEE Access, Vol 4, Pp 2656-2669 (2016)
Acceleration signals have a powerful disturbance rejection potential in rigid body motion control, as they carry a measure proportional to the resulting force. Yet, they are seldom used, since measuring, decoupling, and utilizing the dynamic accelera
Externí odkaz:
https://doaj.org/article/5a0347a712824e5aa78b454fcf206ac7
Autor:
Torstein I. Bo, Andreas R. Dahl, Tor A. Johansen, Eirik Mathiesen, Michel R. Miyazaki, Eilif Pedersen, Roger Skjetne, Asgeir J. Sorensen, Laxminarayan Thorat, Kevin K. Yum
Publikováno v:
IEEE Access, Vol 3, Pp 2065-2079 (2015)
Modern marine electric propulsion vessels have many systems. These interactions and integration aspects are essential when studying a system and subsystem behavior. This is especially important when considering fault scenarios,s harsh weather, and co
Externí odkaz:
https://doaj.org/article/e1bf908484f646568d0825e0b6d0b19e
Autor:
Stian Ruud, Roger Skjetne
Publikováno v:
Modeling, Identification and Control, Vol 35, Iss 4, Pp 333-346 (2014)
As ship systems become more complex, with an increasing number of safety-critical functions, many interconnected subsystems, tight integration to other systems, and a large amount of potential failure modes, several industry parties have identified t
Externí odkaz:
https://doaj.org/article/4da9ad7e03084ab38df6a7836bf493c2